./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:11:33,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:11:33,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:11:33,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:11:33,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:11:33,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:11:33,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:11:33,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:11:33,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:11:33,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:11:33,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:11:33,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:11:33,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:11:33,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:11:33,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:11:33,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:11:33,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:11:33,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:11:33,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:11:33,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:11:33,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:11:33,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:11:33,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:11:33,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:11:33,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:11:33,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:11:33,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:11:33,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:11:33,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:11:33,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:11:33,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:11:33,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:11:33,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:11:33,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:11:33,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:11:33,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:11:33,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:11:33,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:11:33,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:11:33,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:11:33,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:11:33,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:11:34,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:11:34,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:11:34,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:11:34,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:11:34,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:11:34,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:11:34,018 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:11:34,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:11:34,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:11:34,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:11:34,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:11:34,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:11:34,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:11:34,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:11:34,020 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:11:34,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:11:34,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:11:34,021 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:11:34,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:11:34,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:11:34,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:11:34,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:11:34,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:11:34,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:11:34,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:11:34,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:11:34,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:11:34,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:11:34,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:11:34,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:11:34,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:11:34,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:11:34,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:11:34,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:11:34,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:11:34,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:11:34,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:11:34,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:11:34,026 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa [2021-11-23 03:11:34,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:11:34,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:11:34,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:11:34,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:11:34,337 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:11:34,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-11-23 03:11:34,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/data/448f75b84/4f8025a3c3c440f49bdbfe62e550b58f/FLAGc8fb82ed7 [2021-11-23 03:11:35,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:11:35,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-11-23 03:11:35,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/data/448f75b84/4f8025a3c3c440f49bdbfe62e550b58f/FLAGc8fb82ed7 [2021-11-23 03:11:35,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/data/448f75b84/4f8025a3c3c440f49bdbfe62e550b58f [2021-11-23 03:11:35,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:11:35,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:11:35,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:11:35,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:11:35,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:11:35,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:35" (1/1) ... [2021-11-23 03:11:35,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500634d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:35, skipping insertion in model container [2021-11-23 03:11:35,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:35" (1/1) ... [2021-11-23 03:11:35,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:11:36,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:11:40,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-11-23 03:11:40,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:11:40,720 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:11:41,817 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-11-23 03:11:41,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:11:42,101 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:11:42,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42 WrapperNode [2021-11-23 03:11:42,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:11:42,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:11:42,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:11:42,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:11:42,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:42,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:43,231 INFO L137 Inliner]: procedures = 457, calls = 15318, calls flagged for inlining = 154, calls inlined = 76, statements flattened = 12878 [2021-11-23 03:11:43,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:11:43,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:11:43,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:11:43,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:11:43,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:43,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:43,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:43,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:43,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:43,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:44,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:44,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:11:44,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:11:44,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:11:44,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:11:44,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (1/1) ... [2021-11-23 03:11:44,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:11:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:11:44,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:11:44,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfb111c-21bc-48df-9d13-42e05158bdfa/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:11:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-23 03:11:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-23 03:11:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs [2021-11-23 03:11:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs [2021-11-23 03:11:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_area_set [2021-11-23 03:11:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_area_set [2021-11-23 03:11:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-11-23 03:11:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-11-23 03:11:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-11-23 03:11:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-11-23 03:11:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2021-11-23 03:11:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:11:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:11:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_stop_streaming [2021-11-23 03:11:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_stop_streaming [2021-11-23 03:11:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2021-11-23 03:11:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2021-11-23 03:11:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-23 03:11:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-23 03:11:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:11:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:11:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-23 03:11:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-23 03:11:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:11:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:11:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_ac97 [2021-11-23 03:11:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_ac97 [2021-11-23 03:11:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_em28xx [2021-11-23 03:11:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_em28xx [2021-11-23 03:11:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-23 03:11:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-23 03:11:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:11:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:11:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-23 03:11:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-23 03:11:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-23 03:11:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-23 03:11:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:11:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:11:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-23 03:11:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-23 03:11:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-23 03:11:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-23 03:11:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:11:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_vbi_supported [2021-11-23 03:11:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_vbi_supported [2021-11-23 03:11:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 03:11:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 03:11:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:11:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:11:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_copy_video [2021-11-23 03:11:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_copy_video [2021-11-23 03:11:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-11-23 03:11:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-11-23 03:11:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_ident [2021-11-23 03:11:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_ident [2021-11-23 03:11:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2021-11-23 03:11:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2021-11-23 03:11:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-23 03:11:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-23 03:11:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req [2021-11-23 03:11:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req [2021-11-23 03:11:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:11:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2021-11-23 03:11:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2021-11-23 03:11:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-23 03:11:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-23 03:11:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2021-11-23 03:11:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2021-11-23 03:11:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 03:11:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 03:11:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2021-11-23 03:11:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2021-11-23 03:11:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:11:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-23 03:11:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-23 03:11:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-23 03:11:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-23 03:11:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:11:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_i2c_unregister [2021-11-23 03:11:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_i2c_unregister [2021-11-23 03:11:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:11:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:11:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 03:11:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 03:11:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-11-23 03:11:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-11-23 03:11:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:11:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:11:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-23 03:11:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-23 03:11:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-23 03:11:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-23 03:11:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-23 03:11:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:11:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure video_mux [2021-11-23 03:11:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mux [2021-11-23 03:11:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:11:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:11:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:11:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_audio_analog_set [2021-11-23 03:11:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_audio_analog_set [2021-11-23 03:11:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:11:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:11:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-23 03:11:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-23 03:11:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_prepare [2021-11-23 03:11:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_prepare [2021-11-23 03:11:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_start_analog_streaming [2021-11-23 03:11:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_start_analog_streaming [2021-11-23 03:11:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-23 03:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-23 03:11:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg [2021-11-23 03:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg [2021-11-23 03:11:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_reg_len [2021-11-23 03:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_reg_len [2021-11-23 03:11:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 03:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 03:11:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-23 03:11:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure get_ressource [2021-11-23 03:11:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ressource [2021-11-23 03:11:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-23 03:11:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-23 03:11:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_outfmt [2021-11-23 03:11:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_outfmt [2021-11-23 03:11:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:11:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:11:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-23 03:11:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-23 03:11:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:11:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_set_plane_payload [2021-11-23 03:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_set_plane_payload [2021-11-23 03:11:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2021-11-23 03:11:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-11-23 03:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-11-23 03:11:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:11:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:11:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-23 03:11:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-23 03:11:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_close [2021-11-23 03:11:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_close [2021-11-23 03:11:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req_len [2021-11-23 03:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req_len [2021-11-23 03:11:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-23 03:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-23 03:11:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg_bits [2021-11-23 03:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg_bits [2021-11-23 03:11:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:11:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:11:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:11:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-23 03:11:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-23 03:11:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_s_ctrl [2021-11-23 03:11:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_s_ctrl [2021-11-23 03:11:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:11:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:11:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-23 03:11:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-23 03:11:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_buffer_prepare [2021-11-23 03:11:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_buffer_prepare [2021-11-23 03:11:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_release_resources [2021-11-23 03:11:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_release_resources [2021-11-23 03:11:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 03:11:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 03:11:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-23 03:11:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-23 03:11:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_em28xx [2021-11-23 03:11:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_em28xx [2021-11-23 03:11:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs_req [2021-11-23 03:11:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs_req [2021-11-23 03:11:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:11:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-23 03:11:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-23 03:11:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:11:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_info [2021-11-23 03:11:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_info [2021-11-23 03:11:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_video_format [2021-11-23 03:11:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_video_format [2021-11-23 03:11:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:11:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-11-23 03:11:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-11-23 03:11:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-23 03:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-23 03:11:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:11:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:11:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_resolution_set [2021-11-23 03:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_resolution_set [2021-11-23 03:11:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-23 03:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-23 03:11:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_is_ac97_ready [2021-11-23 03:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_is_ac97_ready [2021-11-23 03:11:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:11:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-23 03:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-23 03:11:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_open [2021-11-23 03:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_open [2021-11-23 03:11:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2021-11-23 03:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2021-11-23 03:11:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 03:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 03:11:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-23 03:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-23 03:11:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:11:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:11:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:11:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_uninit_usb_xfer [2021-11-23 03:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_uninit_usb_xfer [2021-11-23 03:11:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure finish_field_prepare_next [2021-11-23 03:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_field_prepare_next [2021-11-23 03:11:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_ac97 [2021-11-23 03:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_ac97 [2021-11-23 03:11:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_wake_i2c [2021-11-23 03:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_wake_i2c [2021-11-23 03:11:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure size_to_scale [2021-11-23 03:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure size_to_scale [2021-11-23 03:11:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-11-23 03:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-11-23 03:11:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-23 03:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-23 03:11:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure scale_to_size [2021-11-23 03:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure scale_to_size [2021-11-23 03:11:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-11-23 03:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-11-23 03:11:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-23 03:11:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-23 03:11:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-23 03:11:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-23 03:11:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:11:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:11:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:11:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_vaddr [2021-11-23 03:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_vaddr [2021-11-23 03:11:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:11:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_start [2021-11-23 03:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_start [2021-11-23 03:11:45,286 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:11:45,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:12:14,653 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:12:17,408 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:12:17,408 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:12:17,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:17 BoogieIcfgContainer [2021-11-23 03:12:17,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:12:17,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:12:17,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:12:17,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:12:17,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:11:35" (1/3) ... [2021-11-23 03:12:17,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78047866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:17, skipping insertion in model container [2021-11-23 03:12:17,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:42" (2/3) ... [2021-11-23 03:12:17,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78047866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:17, skipping insertion in model container [2021-11-23 03:12:17,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:17" (3/3) ... [2021-11-23 03:12:17,437 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-11-23 03:12:17,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:12:17,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:12:17,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:12:17,548 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:12:17,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:12:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 1421 states, 913 states have (on average 1.3636363636363635) internal successors, (1245), 938 states have internal predecessors, (1245), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) [2021-11-23 03:12:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 03:12:17,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:12:17,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:12:17,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:12:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:12:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1495200028, now seen corresponding path program 1 times [2021-11-23 03:12:17,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:12:17,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654641981] [2021-11-23 03:12:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:17,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:12:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:12:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:12:19,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:12:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654641981] [2021-11-23 03:12:19,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654641981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:12:19,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:12:19,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:12:19,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475153919] [2021-11-23 03:12:19,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:12:19,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:12:19,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:12:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:12:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:19,812 INFO L87 Difference]: Start difference. First operand has 1421 states, 913 states have (on average 1.3636363636363635) internal successors, (1245), 938 states have internal predecessors, (1245), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:21,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:24,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:12:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:12:27,390 INFO L93 Difference]: Finished difference Result 2843 states and 4212 transitions. [2021-11-23 03:12:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:12:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-23 03:12:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:12:27,428 INFO L225 Difference]: With dead ends: 2843 [2021-11-23 03:12:27,428 INFO L226 Difference]: Without dead ends: 1420 [2021-11-23 03:12:27,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:27,449 INFO L933 BasicCegarLoop]: 1790 mSDtfsCounter, 1958 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:12:27,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 1838 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 03:12:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-23 03:12:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1418. [2021-11-23 03:12:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 913 states have (on average 1.3581599123767798) internal successors, (1240), 934 states have internal predecessors, (1240), 393 states have call successors, (393), 113 states have call predecessors, (393), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-11-23 03:12:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2015 transitions. [2021-11-23 03:12:27,650 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2015 transitions. Word has length 10 [2021-11-23 03:12:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:12:27,651 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 2015 transitions. [2021-11-23 03:12:27,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2015 transitions. [2021-11-23 03:12:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:12:27,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:12:27,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:12:27,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:12:27,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:12:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:12:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -894940868, now seen corresponding path program 1 times [2021-11-23 03:12:27,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:12:27,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506027093] [2021-11-23 03:12:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:27,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:12:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:12:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:12:28,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:12:28,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506027093] [2021-11-23 03:12:28,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506027093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:12:28,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:12:28,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:12:28,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742459445] [2021-11-23 03:12:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:12:28,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:12:28,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:12:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:12:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:28,876 INFO L87 Difference]: Start difference. First operand 1418 states and 2015 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:30,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:33,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:12:36,398 INFO L93 Difference]: Finished difference Result 1438 states and 2036 transitions. [2021-11-23 03:12:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:12:36,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-23 03:12:36,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:12:36,412 INFO L225 Difference]: With dead ends: 1438 [2021-11-23 03:12:36,412 INFO L226 Difference]: Without dead ends: 1435 [2021-11-23 03:12:36,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:36,415 INFO L933 BasicCegarLoop]: 1790 mSDtfsCounter, 1992 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:12:36,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 1809 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-23 03:12:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2021-11-23 03:12:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1433. [2021-11-23 03:12:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 921 states have (on average 1.3539630836047774) internal successors, (1247), 941 states have internal predecessors, (1247), 396 states have call successors, (396), 117 states have call predecessors, (396), 115 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2021-11-23 03:12:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2029 transitions. [2021-11-23 03:12:36,512 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2029 transitions. Word has length 11 [2021-11-23 03:12:36,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:12:36,513 INFO L470 AbstractCegarLoop]: Abstraction has 1433 states and 2029 transitions. [2021-11-23 03:12:36,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2029 transitions. [2021-11-23 03:12:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:12:36,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:12:36,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:12:36,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:12:36,515 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:12:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:12:36,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1974859745, now seen corresponding path program 1 times [2021-11-23 03:12:36,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:12:36,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075914316] [2021-11-23 03:12:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:36,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:12:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:12:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:12:37,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:12:37,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075914316] [2021-11-23 03:12:37,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075914316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:12:37,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:12:37,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:12:37,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699300790] [2021-11-23 03:12:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:12:37,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:12:37,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:12:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:12:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:37,607 INFO L87 Difference]: Start difference. First operand 1433 states and 2029 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:39,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:44,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:12:44,762 INFO L93 Difference]: Finished difference Result 1435 states and 2030 transitions. [2021-11-23 03:12:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:12:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 03:12:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:12:44,777 INFO L225 Difference]: With dead ends: 1435 [2021-11-23 03:12:44,777 INFO L226 Difference]: Without dead ends: 1432 [2021-11-23 03:12:44,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:44,780 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 1996 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:12:44,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 1781 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 03:12:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-11-23 03:12:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2021-11-23 03:12:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 921 states have (on average 1.3528773072747013) internal successors, (1246), 940 states have internal predecessors, (1246), 395 states have call successors, (395), 117 states have call predecessors, (395), 115 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2021-11-23 03:12:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2027 transitions. [2021-11-23 03:12:44,874 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2027 transitions. Word has length 12 [2021-11-23 03:12:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:12:44,875 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 2027 transitions. [2021-11-23 03:12:44,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2027 transitions. [2021-11-23 03:12:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:12:44,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:12:44,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:12:44,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:12:44,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:12:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:12:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1092601697, now seen corresponding path program 1 times [2021-11-23 03:12:44,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:12:44,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423809219] [2021-11-23 03:12:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:44,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:12:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:12:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:12:46,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:12:46,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423809219] [2021-11-23 03:12:46,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423809219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:12:46,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:12:46,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:12:46,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227479427] [2021-11-23 03:12:46,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:12:46,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:12:46,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:12:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:12:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:46,010 INFO L87 Difference]: Start difference. First operand 1432 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:47,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:51,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:12:57,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:12:57,640 INFO L93 Difference]: Finished difference Result 4138 states and 5891 transitions. [2021-11-23 03:12:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:12:57,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-23 03:12:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:12:57,672 INFO L225 Difference]: With dead ends: 4138 [2021-11-23 03:12:57,672 INFO L226 Difference]: Without dead ends: 2710 [2021-11-23 03:12:57,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:57,684 INFO L933 BasicCegarLoop]: 2357 mSDtfsCounter, 1827 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:12:57,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 4101 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 496 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 03:12:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-11-23 03:12:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2705. [2021-11-23 03:12:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 1749 states have (on average 1.3562035448827903) internal successors, (2372), 1780 states have internal predecessors, (2372), 741 states have call successors, (741), 220 states have call predecessors, (741), 214 states have return successors, (738), 724 states have call predecessors, (738), 730 states have call successors, (738) [2021-11-23 03:12:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3851 transitions. [2021-11-23 03:12:57,894 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3851 transitions. Word has length 13 [2021-11-23 03:12:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:12:57,894 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 3851 transitions. [2021-11-23 03:12:57,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:12:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3851 transitions. [2021-11-23 03:12:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:12:57,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:12:57,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:12:57,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:12:57,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:12:57,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:12:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash 487598882, now seen corresponding path program 1 times [2021-11-23 03:12:57,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:12:57,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276225981] [2021-11-23 03:12:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:57,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:12:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:12:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:12:58,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:12:58,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276225981] [2021-11-23 03:12:58,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276225981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:12:58,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:12:58,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:12:58,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029749141] [2021-11-23 03:12:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:12:58,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:12:58,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:12:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:12:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:12:58,970 INFO L87 Difference]: Start difference. First operand 2705 states and 3851 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:13:00,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:05,216 INFO L93 Difference]: Finished difference Result 2707 states and 3852 transitions. [2021-11-23 03:13:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-23 03:13:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:05,245 INFO L225 Difference]: With dead ends: 2707 [2021-11-23 03:13:05,246 INFO L226 Difference]: Without dead ends: 2704 [2021-11-23 03:13:05,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:05,250 INFO L933 BasicCegarLoop]: 1778 mSDtfsCounter, 1992 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:05,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 1779 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 03:13:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-11-23 03:13:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2704. [2021-11-23 03:13:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 1749 states have (on average 1.3556317895940537) internal successors, (2371), 1779 states have internal predecessors, (2371), 740 states have call successors, (740), 220 states have call predecessors, (740), 214 states have return successors, (738), 724 states have call predecessors, (738), 730 states have call successors, (738) [2021-11-23 03:13:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3849 transitions. [2021-11-23 03:13:05,439 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3849 transitions. Word has length 14 [2021-11-23 03:13:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:05,439 INFO L470 AbstractCegarLoop]: Abstraction has 2704 states and 3849 transitions. [2021-11-23 03:13:05,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:13:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3849 transitions. [2021-11-23 03:13:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:13:05,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:05,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:05,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:13:05,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:13:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2065785854, now seen corresponding path program 1 times [2021-11-23 03:13:05,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:05,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043628971] [2021-11-23 03:13:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:05,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:13:06,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:06,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043628971] [2021-11-23 03:13:06,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043628971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:06,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:06,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:06,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672223531] [2021-11-23 03:13:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:06,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:06,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:06,995 INFO L87 Difference]: Start difference. First operand 2704 states and 3849 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:13:08,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:12,999 INFO L93 Difference]: Finished difference Result 2706 states and 3850 transitions. [2021-11-23 03:13:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-23 03:13:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:13,029 INFO L225 Difference]: With dead ends: 2706 [2021-11-23 03:13:13,029 INFO L226 Difference]: Without dead ends: 2703 [2021-11-23 03:13:13,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:13,034 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 1989 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:13,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 1777 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 03:13:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2021-11-23 03:13:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2703. [2021-11-23 03:13:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 1749 states have (on average 1.3550600343053174) internal successors, (2370), 1778 states have internal predecessors, (2370), 739 states have call successors, (739), 220 states have call predecessors, (739), 214 states have return successors, (738), 724 states have call predecessors, (738), 730 states have call successors, (738) [2021-11-23 03:13:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 3847 transitions. [2021-11-23 03:13:13,226 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 3847 transitions. Word has length 15 [2021-11-23 03:13:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:13,227 INFO L470 AbstractCegarLoop]: Abstraction has 2703 states and 3847 transitions. [2021-11-23 03:13:13,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:13:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 3847 transitions. [2021-11-23 03:13:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:13:13,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:13,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:13,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:13:13,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:13:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash 383670821, now seen corresponding path program 1 times [2021-11-23 03:13:13,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:13,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494681462] [2021-11-23 03:13:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:13,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:13:14,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:14,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494681462] [2021-11-23 03:13:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494681462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:14,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:14,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:14,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881995641] [2021-11-23 03:13:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:14,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:14,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:14,311 INFO L87 Difference]: Start difference. First operand 2703 states and 3847 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:13:15,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:19,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:23,340 INFO L93 Difference]: Finished difference Result 2709 states and 3856 transitions. [2021-11-23 03:13:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:23,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-23 03:13:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:23,367 INFO L225 Difference]: With dead ends: 2709 [2021-11-23 03:13:23,367 INFO L226 Difference]: Without dead ends: 2698 [2021-11-23 03:13:23,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:23,370 INFO L933 BasicCegarLoop]: 1783 mSDtfsCounter, 1979 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:23,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 1802 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 03:13:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-23 03:13:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2694. [2021-11-23 03:13:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 1742 states have (on average 1.3541905855338692) internal successors, (2359), 1770 states have internal predecessors, (2359), 737 states have call successors, (737), 219 states have call predecessors, (737), 214 states have return successors, (738), 724 states have call predecessors, (738), 730 states have call successors, (738) [2021-11-23 03:13:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3834 transitions. [2021-11-23 03:13:23,559 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3834 transitions. Word has length 16 [2021-11-23 03:13:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:23,560 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 3834 transitions. [2021-11-23 03:13:23,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:13:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3834 transitions. [2021-11-23 03:13:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:13:23,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:23,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:23,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:13:23,565 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:13:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 174765320, now seen corresponding path program 1 times [2021-11-23 03:13:23,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:23,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448686758] [2021-11-23 03:13:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:23,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:13:24,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:24,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448686758] [2021-11-23 03:13:24,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448686758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:24,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:24,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:24,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182849943] [2021-11-23 03:13:24,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:24,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:24,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:24,939 INFO L87 Difference]: Start difference. First operand 2694 states and 3834 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:13:26,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:28,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:13:31,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:13:37,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:37,976 INFO L93 Difference]: Finished difference Result 5982 states and 8654 transitions. [2021-11-23 03:13:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-11-23 03:13:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:38,011 INFO L225 Difference]: With dead ends: 5982 [2021-11-23 03:13:38,011 INFO L226 Difference]: Without dead ends: 3292 [2021-11-23 03:13:38,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:38,030 INFO L933 BasicCegarLoop]: 1879 mSDtfsCounter, 277 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:38,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 3639 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 452 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2021-11-23 03:13:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-11-23 03:13:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3291. [2021-11-23 03:13:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2131 states have (on average 1.3730642890661662) internal successors, (2926), 2160 states have internal predecessors, (2926), 945 states have call successors, (945), 219 states have call predecessors, (945), 214 states have return successors, (948), 931 states have call predecessors, (948), 938 states have call successors, (948) [2021-11-23 03:13:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4819 transitions. [2021-11-23 03:13:38,277 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4819 transitions. Word has length 35 [2021-11-23 03:13:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:38,278 INFO L470 AbstractCegarLoop]: Abstraction has 3291 states and 4819 transitions. [2021-11-23 03:13:38,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:13:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4819 transitions. [2021-11-23 03:13:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 03:13:38,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:38,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:38,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:13:38,286 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:13:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:38,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2042340543, now seen corresponding path program 1 times [2021-11-23 03:13:38,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:38,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151667248] [2021-11-23 03:13:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:38,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:13:39,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:39,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151667248] [2021-11-23 03:13:39,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151667248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:39,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:13:39,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:13:39,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250718697] [2021-11-23 03:13:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:39,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:13:39,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:13:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:39,853 INFO L87 Difference]: Start difference. First operand 3291 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:13:41,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:42,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:13:46,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:13:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:52,205 INFO L93 Difference]: Finished difference Result 3297 states and 4825 transitions. [2021-11-23 03:13:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:13:52,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2021-11-23 03:13:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:52,242 INFO L225 Difference]: With dead ends: 3297 [2021-11-23 03:13:52,242 INFO L226 Difference]: Without dead ends: 3294 [2021-11-23 03:13:52,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:13:52,247 INFO L933 BasicCegarLoop]: 1773 mSDtfsCounter, 29 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3512 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:52,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 3512 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2021-11-23 03:13:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2021-11-23 03:13:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2021-11-23 03:13:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 2134 states have (on average 1.372539831302718) internal successors, (2929), 2162 states have internal predecessors, (2929), 944 states have call successors, (944), 220 states have call predecessors, (944), 215 states have return successors, (948), 931 states have call predecessors, (948), 938 states have call successors, (948) [2021-11-23 03:13:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4821 transitions. [2021-11-23 03:13:52,600 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4821 transitions. Word has length 58 [2021-11-23 03:13:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:52,602 INFO L470 AbstractCegarLoop]: Abstraction has 3294 states and 4821 transitions. [2021-11-23 03:13:52,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:13:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4821 transitions. [2021-11-23 03:13:52,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:13:52,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:52,620 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:13:52,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:13:52,622 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:13:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash 644244946, now seen corresponding path program 1 times [2021-11-23 03:13:52,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:52,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167675301] [2021-11-23 03:13:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:52,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms